Psychological / emotional perspective: To be posting a notice suggests making a declaration. When in dreams we are posting a letter it is to communicate information or intention.

To dream that you are posting bail means that you need assistance in financial affairs.The message is that it’s perfectly acceptable to welcome help.

The arrival of a letter in your dream represents a realization, usually about someone else, or news about yourself. Your reaction to the letter is important. Did you feel anxious,...